Single Mom, Billionaire's Bride— Episode 18

Heiress Harley Carson is betrayed by stepsister Ivy & fiancé Gavin, fakes death. 5 years later, she returns as HyperNova chairwoman with her son for revenge. Her one-night stand Nolan reappears; they sign a marriage contract for the boy. Unbeknownst to her, Nolan is the Hamilton empire heir.